pwm: mc33xs2410: add hwmon support

Support for hwmon is provided by a separate driver residing in hwmon
subsystem which is implemented as auxiliary device. Add handling of this
device.

Signed-off-by: Dimitri Fedrau <dimitri.fedrau@liebherr.com>
Link: https://lore.kernel.org/r/20250723-mc33xs2410-hwmon-v5-1-f62aab71cd59@liebherr.com


Signed-off-by: Uwe Kleine-König <ukleinek@kernel.org>